What is the photoreceptor of a camera?

The photoreceptor, which can be understood as a digital film, is a small piece of element used to receive light and convert it into an image signal. There are two types: CCD and CMOS.

In general, the main factor that determines the effect of the photo is the size of the sensor rather than the distribution of pixels on it (a small sensor may have more pixels than a large sensor, but the effect is not as good as that of the large sensor) In addition, it is the sensor's suppression of noise, which is the noise on the photo. The less noise the picture has, the clearer it will be.

The photoreceptor is also called the image sensor, the two only CCD chip is the best, because CCD and CMOS in the manufacture of the main difference is that the CCD is integrated in the semiconductor single-crystal material, while CMOS is integrated in the semiconductor material known as metal oxide, the principle of work is not essentially different.

Application Functions

Compared with the traditional camera, the traditional camera uses "film" as the carrier of its recording information, while the digital camera "film" is the imaging photographic sensor, and is integrated with the camera. The photoreceptor is the core of the digital camera, but also the most critical technology. There are two types of core imaging components in a digital camera: one is the widely used CCD (charge-coupled device); the other is the CMOS (complementary metal oxide conductor) device. The light-sensitive elements used in digital cameras in cell phones are basically CMOS.

Reference: Baidu Encyclopedia - Photoreceptor